JPH0421967A - Disk player - Google Patents

Abstract

PURPOSE:To reproduce plural disks in turn with simple construction without requiring any dedicated magazine, etc., by conveying the disks to a supply part, a reproducing part and an ejecting part by means of a loading head in its rotation. CONSTITUTION:By rotating the loading head 31, a disk D can be conveyed into the reproducing part 44 from the supply part 42 to perform its reproducing, while a disk D which has finished its reproducing can be conveyed out of the reproducing part 44 to the ejecting part 46. Then, provided that plural disks D are disposed in the supply part 42, these plural disks D are conveyed into the reproducing part 44 to be reproduced in turn, and the reproduced disk D is conveyed out to the ejecting part 46 in turn.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a disc player that reproduces signals from a disc-shaped signal recording medium such as a compact disc, and particularly,
Concerning playing multiple discs in sequence.

(Prior Art) Some compact disc (hereinafter referred to as disc) players play multiple discs in sequence.

This disc player uses a magazine with a plurality of trays that can be taken out and put in. A disc is placed on each tray pulled out from the magazine, the trays are stored in the magazine, and this magazine is installed in the disc player. and inside the disc player,
Selectively pull out multiple trays one by one from the magazine,
The disc on this tray will be played.

(Problem to be Solved by the Invention) By the way, the above-mentioned disc player requires a dedicated magazine, and it is troublesome to store discs in the magazine. Since a mechanism for selecting one tray from a plurality of trays is required, the structure is complicated and the price is high.

The present invention has been made in view of these points, and an object of the present invention is to provide a disc player that does not require a dedicated magazine or the like, has a simple structure, and can play a plurality of discs in sequence. It is something.

[Structure of the invention]

(Means for Solving the Problems) A disc player according to claim 1 of the present invention has an end portion of a loading head 31 for transporting a disc D rotatably provided on a main body 1 around a spindle 3, Located on the rotation trajectory of the head 31, the main body 1 includes a supply section 42 for disposing a disc D to be reproduced, a reproducing section 44 for reproducing the disc D, and an ejecting section 46 for discharging the reproduced disc D. By the rotation of the loading head 31, the disc D is transported from the supply section 42 to the playback section 44, and from the playback section 44 to the ejection section 46.

According to a second aspect of the present invention, in the disc player according to the first aspect, the loading head 31 moves forward and backward in the three directions of the support shaft with respect to each of the supply section 42, the playback section 44, and the discharge section 46, and when advancing, The disc D placed in the supply section 42 is held, the disc D is mounted on a turntable 43 provided in the playback section 44, and the disc D is ejected to the ejection section 46.

According to a third aspect of the present invention, in the disc player according to the second aspect, the loading head 31 is attached to the spindle 3,
A cam 5 is provided on this support shaft 3, an engaging portion 14 that engages with this cam 5 is provided on the main body 1, and as the cam 5 rotates,
As the support shaft 3 rotates, the support shaft 3 moves forward and backward in the axial direction.

(Function) The disc player according to claim 1 of the present invention can carry the disc D from the supply unit 42 to the playback unit 44 and play it by rotating the loading head 31.
The disk D that has been played is moved from the playback unit 44 to the ejection unit 46.
Therefore, by placing a plurality of disks D in the supply section 42, the plurality of disks D are carried into the playback section 44 and played in order, and the played disks D are ejected in order. It can be carried out to the section 46.

A second aspect of the present invention is the disc player according to the first aspect, in which the loading head 31 rotated in the supply section 42 advances and retreats into the supply section 42 to hold the disk D, and the loading head 31 rotated in the playback section 44 moves forward and backward into the supply section 42 to hold the disk D. However, in order to mount the disc D on the turntable 43, the playback unit 44
The loading head 3 moves forward and backward and rotates to the discharge section 46.
1 moves toward and away from the ejecting section 46 in order to eject the disk D.

According to a third aspect of the present invention, in the disc player according to the second aspect, the rotation and movement of the loading head 31 is performed by the cam 5.

(Embodiment) An embodiment of the disc player of the present invention will be described with reference to the drawings.

Note that this embodiment is an example of a disc player that plays a compact disc D (hereinafter referred to as disc D) with a diameter of 12 cm and 8 cIn.

1 and 2, reference numeral 1 denotes a box-shaped main body made of synthetic resin, and a cylindrical sleeve 2 is vertically provided in the center of the top plate 1a of this main body 1 via a chassis 1b. A support shaft 3 is inserted into the sleeve 2 so as to be rotatable and movable up and down, and as shown in FIG. 5, friction ring 6, clutch disc 7, coil spring 8
, a washer 9, and a retaining ring 10 such as an E-ring are attached to the support shaft 3.
, 10, from the cam gear 5 to the washer 9 are removed from the support shaft 3 and held at the IL position, and thereby the coil spring 8
Due to the urging force, the cam gear 5 and the clutch disk 7 are pressed into contact with each other via the friction ring 6.

The cam gear 5 described in -1- is rotatable with respect to the support shaft 3, and the clutch disk 7 described in "2" rotates integrally with the support shaft 3. When the cam gear 5 rotates, the shaft 3 is rotated. Rotation is transmitted from the cam gear 5 to the clutch disk 7, and the support shaft 3 rotates together with the clutch disk 7, provided that there is no excessive resistance to the rotation of the clutch disk 7.

Further, as shown in FIGS. 2 to 4, the cam gear 5 has a gear portion 5a and an annular cam portion 5b integrally protruding from the lower part of the gear portion 5a. is opposed by an engaging part j4 provided in the main body 1, and the tip of an arm 16 supported by a shaft 15 is disposed on the upper part of the gear part 5a, and this arm 16 is pushed downward by a coil spring 17. The arm 1G is biased by the coil spring 17.
, the cam gear 5 is biased in the -' direction, and the cam portion 5
b is adapted to engage with the engaging portion 14.

As shown in FIG.
The small pulley 22 attached to the output shaft of the motor 21 and the endless belt 23 hooked around the small pulley 22
, a dog pulley 24 on which this endless belt 23 is hung, a small gear 25 integrated with this human pulley 24, a large gear 2G meshed with this small gear 25, and a small gear 27 integrated with this large gear 26.
With this rotation, the cam gear 5 moves up and down according to the cam diagram of the cam portion 5b shown in FIG.

As shown in FIG. 3, the small gear 27 that transmits the rotation of the motor 21 to the gear portion 5a of the cam gear 5 has a length that allows it to maintain meshing with the gear portion 5a even when the cam gear 5 moves up and down. It has a certain quality.

When the cam gear 5 rotates, the clutch disk 7 and the support shaft 3 move up and down together with the cam gear 5, and as described above, on the condition that there is no excessive resistance to the rotation of the support shaft 3, the cam gear 5 The clutch disk 7 and the support shaft 3 rotate together with the clutch disk 7, but as will be explained in detail later, the support shaft 3 cannot rotate when the engagement cylinder 33, 34 and the guide shaft 47, 48 are engaged. Therefore, during one rotation of the cam gear 5 in the clockwise direction, the clutch disk 7 and the support shaft 3 rotate by 1/3.

In addition, in FIG. 2, for convenience of drawing, the engaging part 14 for the cam part 5b of the cam gear 5 is drawn on the back side of the support shaft 3, and the cam part 5b of the cam gear 5 is drawn on this engaging part 14. Although the arm 16 to be engaged is shown on the front side of the support shaft 3, in reality, it is correct that the engaging portion 14 is on the opposite front side.
As shown in FIG. 3, the cam portion 5b of the cam gear 5 in FIG.
The correct state is when it is rotated 180 degrees.

Furthermore, a synthetic resin l]-ding head 31 for conveying the disk D is provided at the upper end of the support shaft 3.

This loading head 31 (hereinafter referred to as head 31) is shaped like a fan, as shown in FIG.
A disk chuck 32 that holds the disk D is provided on the lower side of the center so as to be movable within a predetermined range, and can be mounted horizontally by fitting the hole 31b formed in the protrusion 31a at one end onto the spindle 3. and rotates together with the support shaft 3 in a clockwise direction (counterclockwise in FIG. 6) around the support shaft 3.

A pair of circular engagement cylinders 33.34 are provided symmetrically at the lower ends of both sides of the head 31 at positions that form 120 degrees with respect to the support shaft 3. The semicircular protrusions 33a and 34a are protruded from the rear side in the direction of rotation about the support shaft 3.

Further, a left front portion on the top plate Ia of the main body 1 located on the rotation locus of the head 31 about the support shaft 3;
A supply section 42 is provided with a circular support cylinder 41 that fits and supports the center opening of the disc D to be played, at the center rear part and the right front part; A playback section 44 equipped with a turntable 43 and a discharge section 46 equipped with a circular support tube 45 that fits into and supports the center opening of the played disc D are arranged around the spindle 3. They are provided at equal angles of 120 degrees clockwise.

Then, the engagement cylinder 33 of the head 31 is placed at an intermediate position between the support cylinder 41 of the supply section 42 and the turntable 43 of the reproduction section 44.
．． A guide shaft 47 for the reproducing unit 4 is provided vertically protruding from the chassis 1b onto the top plate la.
A guide shaft 4B for the engagement cylinders 33 and 34 of the head 31 is provided at an intermediate position between the turntable 43 of No. 4 and the support cylinder part 45 of the discharge section 46, projecting vertically from the chassis 1b onto the top plate IR.

Then, as shown in FIG. 7, when the head 31 is lowered to a predetermined position (0 degree position in the cam diagram in FIG. 5), at least one engagement cylinder 33.3 of the head 31
4 is fitted into at least one guide shaft 47, 48 on the main body 1 side, and the head 31 is positioned. In this state shown in FIG. 7, the cam gear 5 is moved clockwise by the motor 21. When the cam gear 5 rotates to The head 31, the support shaft 3, and the clutch disk 7 slide only in an upward movement.

Then, when the head 31, the support shaft 3, and the clutch disc 7 rise to the highest position (position 183 degrees in the cam diagram), as shown in FIG. The protrusions 33a and 34a of the cylinders 33 and 34 are disengaged from the guide shafts 47 and 48 on the main body 1 side, and from just before the state shown in FIG. is allowed, the rotation is transmitted from the cam gear 5 to the clutch disc 7, and the head 31, the support shaft 3, and the clutch disc 7 begin to rotate, and along with this, the head 3
1, the support shaft 3, and the clutch disk 7 perform a slight downward movement (in the range of 193 degrees to 246 degrees in the cam diagram).

Then, when the head 31 rotates 120 degrees, at least one engagement tube 33. of the head 31 rotates, as shown in FIG.
The protrusions 33a and 34a of 34 are caught on at least one guide shaft 47, 48 on the main body 1 side, and the rotation of the head 31, the support shaft 3, and the clutch disk 7 is prevented, so that the gap between the cam gear 5 and the clutch disk 7 is The head 31, support shaft 3, and clutch disk 7 move downward (from 309 degrees in the cam diagram).
356 degree range).

Therefore, during one rotation of the cam gear 5 in the clockwise direction, the head 31, the clutch disk 7, and the support shaft 3 are rotated by 1/3 of 120 degrees, and by continuously performing this rotation, the head 31 However, in each of the supply section 42, regeneration section 44, and discharge section 46, rotation is stopped, and in this state, the operation of descending, rising, and then rotating by 120 degrees again after this rise is repeated. There is.

That is, in FIG. 1, when the cam gear 5 is continuously rotated clockwise from a state where the head 31 is in the regeneration section 44 and has been lowered to a predetermined position, the pair of engagement cylinders 33 and 34 of the head 31 are initially rotated. are a pair of guide shafts 47 on the main body 1 side.
48, the head 31 only performs an upward movement, rising to the highest position and engaging the engagement tube 33.34 of the head 31 and the protrusion 33 of this engagement tube 33.34.
After the a and 34a come off the guide shafts 47 and 48 on the main body 1 side, the head 31 begins to rotate clockwise, and the head 3
1 rotates 120 degrees and moves to the ejection part 46, the head 31 has descended a little. The part 33a is caught on the guide shaft 48 on the right side of the main body 1, so that the head 31 only moves downward, and at this time, the engagement tube 33 of the head 31 is caught on the guide shaft 48 on the main body 1 side. Since they fit together, the head 31 is positioned with respect to the discharge section 46.

After the head 31 has descended to a predetermined position in the discharge section 46, it moves to a rising operation and rises to the uppermost position, and the engagement tube 33 of the head 31 and the protrusion 33 of this engagement tube 33 are moved to the uppermost position.
After a comes off the guide shaft 48 on the main body 1 side, the head 31
begins to rotate clockwise, and by the time the head 31 rotates 120 degrees and moves to the supply section 42, the head 31 has descended a little. The protrusion 34a of the other engagement tube 34 is caught on the left guide shaft 47 on the main body 1 side, and as a result, the head 31 only moves downward, and at this time, the engagement tube 34 of the head 31 fits into the guide shaft 47 on the main body 1 side, so that the head 31 is positioned with respect to the supply section 42.

After the head 31 is lowered to a predetermined position in the supply section 42, the head 31 moves to a rising operation, and rises to the uppermost position, and the engagement tube 34 of the head 31 and the protrusion 34 of this engagement tube 34 are moved to the uppermost position.
After a comes off the guide shaft 47 on the main body 1- side, the head 3
1 begins to rotate clockwise and the head 31 rotates 1-20 degrees and moves to the playback section 44, the head 31 has descended a little. , the protrusions 33a and 34a of the pair of engagement cylinders 33 and 34 of the head 31 are connected to the pair of guide shafts 47 on the main body 1 side.
．． 48, and as a result, the head 3
1 performs only the lowering operation, and at this time, the engaging tubes 33 and 34 of the head 31 fit into the guide shafts 47 and 48 on the main body 1 side, so that the head 31 is positioned with respect to the reproducing section 44.

Then, when the cam gear 5 continues to rotate, the head 31 rotates clockwise by 120 degrees and then stops.
At the same time, the head 31 performs a descending operation and an ascending operation while stopping its rotation.
The head 31 repeats the operation of advancing and retreating in order with respect to the supply section 42, the reproduction section 44, and the discharge section 46.
As shown in FIG. 2, one switch 52 for detecting the operating state of the clutch disc 7 is provided in the main body 1. It is activated by descending to
The state in which the head 31 has descended to a predetermined position is detected by the reproducing section 44, and the motor 21 that rotates the cam gear 5 is controlled by this detection signal.

In this embodiment, the head 31 is provided with two engaging cylinders 33.
．． 34 and two guide shafts 47 and 48 are provided on the main body 1 side, but this is because we do not want the guide shafts to protrude between the supply section 42 and the discharge section 46.
If a guide shaft is also provided between the discharge part 4G and the discharge part 4G, only one of the engaging cylinders 33 and 34 of the head 31 is required.
In this way, when there are three guide shafts and one engagement cylinder, the supply section 42, regeneration section 44, and discharge section 46 are arranged at equal intervals of 120 degrees around the support shaft 3. There is no need to make it an angle.

Next, the chuck 32 (hereinafter referred to as the chuck 32) provided on the head 31 has a cylindrical base 5 made of synthetic resin, as shown in FIGS. 10 to 14.
6, a short cylindrical fitting protrusion 57 for the center opening [1 part I (I) of the disk D is integrally provided at the bottom of the base body 56, and a diameter gradually increases at the bottom of the fitting protrusion 57. A truncated cone-shaped guide protrusion 58 is integrally provided to reduce the diameter, and a small-diameter leading protrusion 59 is integrally protruded from the lower part of the guide protrusion 58. 56
A positioning hole 60 is drilled in the positioning hole 6.
A guide portion 61 whose diameter increases toward the lower end surface of the leading protrusion 59 is formed at the lower end of the guide portion 59 .

-1 located at the upper outer side of the fitting protrusion 57;
- An annular flange portion 65 is integrally provided on the outer periphery of the base body 56 to protrude from the two sides of the disk D, and a cylindrical outer wall portion 6G is integrally provided on the upper side of the outer periphery of this flange portion 65, and this An annular locking edge 6 on the outer periphery of the upper end of the outer wall 66
A sheet-shaped cushion body 68 is provided on the lower surface of this locking edge 67, and is located between the base body 56 and the outer wall portion 66, and the flange portion 6
An annular magnet 69 is provided on top of the magnet 5 .

As shown in FIG. 6, through holes 73 are formed between the fitting protrusion 57 and the flange portion 65 and vertically penetrating through the base body 56 at three locations. Hole 7
A chuck pin 74 is swingably inserted into each of 3,
A conical tapered portion 75 is formed at the lower end of the three chuck pins 74, and this tapered portion 75 projects into the guide protrusion 58.

A pair of upper and lower large-diameter portions 79.80 are formed at intervals at the upper end portions of the three chuck pins 74, and the large-diameter portions 79.80 are formed on the outer periphery of the two ends of the base body 56. A coil spring 82 with both ends connected in an endless manner is wound around the two ends of the base body 56, and three coil springs 82 are disposed in the cutout 81 formed in the cutout 81. The upper end portions of these three chuck pins 74 are connected to the base 5 by engaging the recesses 83 between the large diameter portions 79 and 80 of the chuck pins 74.
6 toward the center of the chuck pins 74. As a result, the lower ends of the three chuck pins 74 are urged outward about the large diameter portion 80, and the lower ends of the three chuck pins 74 are tightened toward the center of the chuck pins 74. The fitting protrusion 57 projects on the outer periphery with respect to the inner periphery of the opening H of the disk D.

A cap 87 is attached to the upper part of the base body 56 by a screw 8.
This cap 87 presses the upper ends of the three chuck pins 74 and covers the coil spring 82, thereby allowing the chuck 3 to
2 are configured.

The chuck 32 consists of the base body 56, the magnet 69, three chuck pins 74, the coil spring 82, the cap 87, etc., and the outer wall portion 66 of the base body 56 is movably fitted into the circular hole 90 of the supporting frame 89. Then, the locking edge 67 is opposed to the upper surface of the peripheral part of the circular hole 90 of the support frame 89 via the cushion body 68, and the support frame 89 is screwed upward with the screw 91.
By being attached to the lower part of the head 1, the head 31 is held so as to be movable within a predetermined range.

Further, the support tube 41 provided in the supply section 42 is connected to the first
As shown in FIG. 0 and FIG. 11, the top plate 1 of the main body 1
It is inserted from above together with a coil spring 96 into a bottomed circular guide cylinder part 95 integrally formed in a, and a plurality of locking claws 97 formed at the lower end part are locked to the lower end part of the guide cylinder part 95. As a result, it is held by the guide cylinder part 95 so as to be able to move up and down, and normally projects to the upper part of the guide cylinder part 95 by the biasing force of the coil spring 96.

An end plate portion 9 is provided on the inner side of the upper end of the support tube 41 through a recess 98 corresponding to the leading protrusion 59 of the chuck 32.
9 is formed, and an engaging pin 100 for the positioning hole 60 of the chuck 32 is implanted in the center of the end plate portion 99.

Note that an annular platform 101 is formed around the guide cylinder section 95 of the upper surface plate 1a, and a sheet-shaped cushion body 1G2 is disposed on this platform 101.

Then, the openings H of a plurality of disks D, for example, about five disks, are fitted into the support cylinder 41 of the supply section 42, and the base section 10 is
1 with the cushion body 102 in between.

Then, with the disk D placed, this supply section 42
On the other hand, when the head 31 is lowered by the rotation of the cam gear 5 shown in FIGS. In addition, the positioning hole 60 of the chuck 32
The engagement pin 100 of the support tube 41 enters through the guide portion 61, thereby positioning the chuck 32 and the support tube 41 coaxially.

Then, when the head 31 further descends, the chuck 32
The leading protrusion 59 contacts the end plate 99 of the support tube 41 and pushes the support tube 41 down against the coil spring 96.

This lowering of the head 31 is caused by the flange portion 6 of the chuck 32
5 comes into contact with the upper surface of the uppermost disk D, and further, the cap 87 of the chuck 32 comes into contact with the head 31. Regardless of the number of disks D supported by the support cylinder 41, in this state, the head 31 becomes unable to descend.

In this state, the tapered portions 75 of the three chuck pins 74 of the chuck 32 move inward against the coil spring 82 by engaging with the inner periphery of the opening H of the uppermost disk D. However, it passes through the opening H of the topmost disk D, and the lower ends of the three chuck pins 74 are pressed against the inner periphery of the opening H of the topmost disk D by the coil spring 82. It has become.

After this, the head 31 cannot be lowered, so
In FIG. 3, the cam portion 5b of the cam gear 5 is connected to the engaging portion 14.
Thereafter, the cam portion 5b of the cam gear 5 engages with the engaging portion 14 again, and the head 31 moves upward.

When the head 31 is raised, the three chuck pins 74 remain in pressure contact with the inner periphery of the opening H of the uppermost disk D.
is held by the three chuck pins 74 and rises together with the chuck 32, and in conjunction with this, the support cylinder 41 is lifted to its original position by the coil spring 96.

That is, when the head 31 descends with respect to the supply section 42, the first one is applied to the opening I-1 of the uppermost disk D of the one to five disks D supported by the support cylinder 41. The three chuck pins 74 of the chuck 32 are inserted in the range marked "1 hold" in the cam diagram in Figure 5,
The tips of the three chuck pins 74, which are urged outward by the coil springs 82, come into pressure contact with the inner periphery of the opening 11H of the uppermost disk D, so that the uppermost disk D is moved. It is designed to be held by a chuck 32,
After this, when the head 3I passes through the 360 degree (0 degree) position of the cam diagram in FIG. 32, and the remaining disks D rise with the support cylinder 4.
1 and left in the supply section 42.

Note that when there are two or more disks D supported by the support cylinder 41, the tapered portions 7 at the tips of the three chuck pins 74 are attached to the inner periphery of the opening H of the second disk D from the top.
5 are facing each other, the second disk D is never held, and only the topmost disk D is always held.

The disk D held by the chuck 32 is positioned by the three chuck pins 74, and the center of the opening H of the disk D and the center of the chuck 32 are aligned.

Further, a turntable 43 provided in the reproduction section 44
As shown in FIG. 12, the mounting body 106 is fitted onto the outer periphery of the tip of a hollow mounting body 106 whose diameter is gradually increased, and this mounting body 106 is attached to the output shaft IH of the motor 107.
This motor 107 is installed perpendicularly to the chassis lc inside the main body 1, and by driving this motor 107, the turntable 43 is rotated around the output shaft 108 of the motor 107.
is designed to rotate in a predetermined direction.

This turntable 43 is made of a magnetic material and is in a relationship of adsorption with the magnet 69 of the chuck 32.

When the head 31 is lowered with respect to the reproducing unit 44 by the rotation of the cam gear 5 shown in FIGS. The output shaft 108 enters through the guide portion 61, whereby the chuck 32 and the turntable 43 are positioned coaxially.

Then, when the head 31 further descends, the chuck 32
The magnet 69 is attached to the turntable 4 via the flange portion 65.
3, and in this state, when the chuck 32 holds the disk D, the magnet 69 of the chuck 32 presses the disk D against the turntable 43 via the flange portion 65.

This lowering of the head 31 causes the chuck 32 to move towards the disk I]
, the flange portion 6 of the chuck 32
5 holds the disk D between it and the turntable 43 by the magnet 69, and the cushion body 68 on the locking edge 67 of the chuck 32 is separated from the supporting frame 89, and the cap of the chuck 32 is This is continued until the chuck 32 is completely separated from the head 31 and the support frame 89, that is, before the chuck 87 comes into contact with the head 31.

This state corresponds to the position from 356 degrees to 4 degrees in the cam diagram of FIG. 5, and in this state, the switch 52 shown in FIG. As a result, the state in which the head 31 has descended to a predetermined position in the regeneration unit 44 is detected, and based on this detection signal, the motor 21 that rotates the cam gear 5 can be controlled, for example, When playing the disc D or putting the disc player into a rest state, the motor 21 is stopped to stop the head 31 in its lowest position, thereby pressing the disc D against the turntable 43. It can be kept in a fixed state.

In this state, there is no change in the state in which the disc D is held by the chuck 32, and the lower ends of the three chuck pins 74 of the chuck 32 are in pressure contact with the inner periphery of the opening H of the disc D by the coil spring 82. In order to maintain the position, the disk D is positioned by three chuck pins 74 so that the center of the opening 11 H of the disk D and the center of the chuck 32 are aligned, and the positioning hole 60 of the chuck 32 is aligned. Output shaft 1 at the center of the turntable 43
08 are engaged and the chuck 32 and the turntable 43 are positioned coaxially, so the disk D and the turntable 43 are positioned concentrically.

After that, the head 31 is rotated by the rotation of the cam gear 5.
When the chuck 32 is raised, the chuck 32 maintains the state in which it holds the disk D, so the disk D is held by the three chuck pins 74 and rises together with the chuck 32.

That is, when the head 31 is lowered relative to the reproducing section 44, the lowering of the head 31 can be stopped by the switch 52 shown in FIG. 2 with the head 31 lowered to the lowest position, and in this state, Chuck 32 of head 31
is holding disc D, the chuck 32 descends to the position indicated as "play" on the cam diagram in FIG. In the above position, the chuck 32 holding the disc D is pressed against the turntable 43 and is not in contact with the head 31 and the supporting frame 89, so that the disc D can be rotated by the motor 107. After that, when the cam gear 5 is rotated, the head 31 rises, and the disk D rises together with the chuck 32 while being held by the chuck 32.

Further, as shown in FIGS. 13 and 14, the support cylinder section 45 provided in the discharge section 46 is formed integrally with the top plate 1a of the main body 1, and the chuck 32 is attached to the inner side of the upper end. An end plate portion 113 is formed through a recess 112 for the leading protrusion 59, and an engagement pin 114 for the positioning hole 60 of the chuck 32 is formed in the center of the end plate portion 113.
has been planted.

An annular platform 115 is formed around the support tube 45 of the top plate 1a, and a sheet-like cushion body 116 is disposed on the platform 115.

Then, the openings H of a plurality of discs D, for example, about five discs, are fitted into the support cylinder part 45 of the ejecting part 46, and the base part 1
15 through the cushion body 116 in a stacked state.

When the head 31 is lowered with respect to the discharge section 46 by the rotation of the cam gear 5 shown in FIGS. At the same time, the engaging pin 114 of the support cylinder part 45 enters the positioning hole 60 of the chuck 32 via the guide part 61, and thereby,
The chuck 32 and the support cylinder part 45 are positioned coaxially.

At the same time, the tapered portions 75 of the three chuck pins 74 of the chuck 32 engage with the inner side of the upper end of the support cylinder portion 45, and due to the taper, the lower ends of the three chuck pins 74 engage with the coil spring 82. When the chuck 32 moves inward against the resistance, and the chuck 32 is holding the disk D, the three chuck pins 74 separate from the inner periphery of the opening H of the disk D, and as a result, the disk D is held by its own weight. The disc D falls, the opening H of the disc D fits into the support cylinder part 45, and the disc D descends along the support cylinder part 45, and the cushion body 11
6 is supported on the platform 115.

The head 31 is lowered until the leading protrusion 58 of the chuck 32 comes into contact with the end plate 113 of the support tube 45 and the cap 87 of the chuck 32 comes into contact with the head 31. , the head 31 cannot be lowered.

After this, the head 31 cannot be lowered, so
In FIG. 3, the cam portion 5b of the cam gear 5 is connected to the engaging portion 14.
Thereafter, the cam portion 5b of the cam gear 5 engages with the engaging portion 14 again, and the head 31 moves upward.

When the head 31 rises, the chuck 32
Since the disk D held by the chuck 32 has already fallen into the support tube 45, only the chuck 32 will necessarily rise.

That is, when the head 31 descends with respect to the ejecting portion 46, at the position indicated as "ejecting" in the cam diagram of FIG.
Tapered portion 75 of three chuck pins 74 of chuck 32
engages with the inner side of the upper end of the support tube 45, the lower ends of the three chuck pins 74 of the chuck 32 move inward, and at this time, the chuck 32 holds the disk D. In this case, the disk D is dropped onto the support tube 45 and ejected, and then passes through the 360 degree (0 degree) position of the cam diagram in FIG.
When the rotation starts to rise, only the chuck 32 rises together with the head 31, and the disk D is reliably left in the support tube 45.

In FIG. 1, reference numeral 120 is a laser pickup for reproducing the disc D, and this laser pickup 120 (hereinafter referred to as pickup +20) is movable in the radial direction of the turntable 43 in the reproducing section 44. The turntable 43 is moved in the radial direction by a motor 121 shown in FIG.

Next, the overall operation will be explained.

Note that in the rest state of this disc player, the head 31 is lowered onto the turntable 43 in the reproducing section 44, so this state will be explained first.

When playing the discs D, the openings H of about 1 to 5 discs D are fitted into the support cylinder 41 of the supply section 42 and arranged in a stacked state.

Next, a playback command is issued using an operation panel (not shown) on the front of the main body 1.

Then, the cam gear 5 is rotated clockwise by the motor 21, whereby the head 31 rises from the turntable 43 in the reproducing section 44, rotates from the reproducing section 44 to the ejecting section 46, and is supported in the ejecting section 46. Cylinder part 45
After descending, it rises by 1" from the support cylinder part 45, further rotates from the discharge part 46 to the supply part 42, and descends to the support cylinder 41 at the supply part 42.

Then, when the head 31 descends in the supply section 42, the chuck 32 of the head 31 holds only one disk D supported by the support tube 41.

After this, the rotation of the cam gear 5 by the motor 21 continues, and the head 31 rises from the support tube 41 together with the chuck 32 holding the disk D, and further rotates from the supply section 42 to the playback section 44. , and descends to the turntable 43 in the playback section 44 .

Then, when the head 31 descends in the reproducing section 44,
The switch 52 detects the lowering of the head 31, and this detection signal causes the motor 21 that was driving the cam gear 5 to stop, causing the head 31 to stop at its lowest position, thereby removing the disk held by the chuck 32. D is held pressed against the turntable 43.

In this state, the motor 107 rotates the turntable 43 in a predetermined direction, and together with this turntable 43, the disk D and the chuck 32 rotate.
The pickup 120 is operated and the motor 121 moves the pickup 120 from the inner circumferential position to the outer circumferential position on the lower surface of the disc D, thereby playing back the disc D.

When the playback of disk D is finished, the operation of the pick-up +20 is stopped and the turntable 43 is stopped.
The motor 107 that was driving the motor stops.

Thereafter, the cam gear 5 is rotated clockwise by the motor 21, thereby causing the head 31 to rotate to the disk D.
along with the chuck 32 holding the turntable 43.
After rising from the regenerating section 44 to the discharging section 46,
At the discharge part 46, it descends to the support cylinder part 45.

Then, when the head 31 descends in ejection g546, the chuck 32 of the head 31 releases the disk D held by it, and the disk D is fitted into the support cylinder portion 45.

After this, the rotation of the cam gear 5 by the motor 21 continues, and the head 3I rises from the support cylinder part 45 in the discharge part 46, rotates from the discharge part 46 to the supply part 42, and in the supply part 42, It descends into the support tube 41.

If the disk D is supported by the support tube 41 when the head 31 descends in the supply section 42,
The chuck 32 of the head 31 holds only one disk D supported by the support cylinder 41.

After this, the rotation of the cam gear 5 by the motor 21 continues, and the head 31 rises from the support cylinder 41, and further rotates from the supply section 42 to the regeneration section 44, and then moves to the regeneration section 44.
4, it descends to the turntable 43.

Then, when the head 31 descends in the reproducing section 44,
The switch 52 detects the lowering of the head 31, and this detection signal causes the motor 21 driving the cam gear 5 to stop, thereby stopping the head 31 in the lowered position.

In this state, if the chuck 32 does not hold the disc D, the chuck 32 remains in this state, thereby bringing the disc player into a rest state.

Further, in this state, when the chuck 32 holds the disk D, the operations after the above-described reproduction operation are repeated.

Therefore, when a plurality of disks D are fitted into the support cylinder 41 of the supply section 42, the plurality of disks D are carried into the playback section 44 one by one and played in order, and the played disks D are It can be carried out to the support cylinder part 45 of the discharge part 46 in order.

In this embodiment, the disc chuck 32 provided on the loading head 31 holds the disc D from the inner periphery of the central opening H, but the present invention is not limited to this. Alternatively, one surface of the disk D may be held by suction.

Further, in this embodiment, the disk D is arranged horizontally and moved horizontally, but the present invention is not limited to this.
may be arranged vertically and moved vertically.

〔Effect of the invention〕

As described above, the disc player of the present invention can transport a disc from the supply section to the playback section and play it by rotating the loading head, and also transport the disc after playback from the playback section to the ejection section. Therefore, by placing a plurality of disks in the supply section, the plurality of disks can be carried into the playback section and played in order, and the played disks can be carried out in order to the discharge section. There is no need for a dedicated magazine for mounting multiple discs, and the structure is simple and inexpensive.

In addition to this, according to claim 2, the loading head rotated in the supply section advances and retreats from the supply section to hold the disc, and the loading head rotated in the playback section loads the disc on the turntable. In order to
Since the disk moves forward and backward to the ejecting section in order to eject the disk, there is no need for a special elevating mechanism or the like for each of the supplying section, reproducing section, and ejecting section.

Furthermore, in addition to this, according to claim 3, the loading head is rotated and moved back and forth by a cam.
The loading head drive mechanism is simple and does not require any special control.

[Brief explanation of the drawing]

The figures show an embodiment of the disc player of the present invention, in which FIG. 11 is a plan view of the entire structure, FIG. 2 is a vertical cross-sectional side view thereof, and FIG. 3 is a front vertical cross-sectional view of the driving mechanism of the loading head.
Figure 4 is a side view of the cam, Figure 5 is its cam line diagram, Figure 6 is a bottom view of the loading head, Figures 7 to 9 are illustrations of its operation, and Figures 10 and 11 are supply Fig. 12 is a longitudinal cross-sectional view of the support cylinder and disc chuck of the playback part;
14 and 14 are longitudinal cross-sectional views of the support cylinder part of the ejecting part and the disc chuck. D... Disc, 1... Main body, 3... Support shaft, 5... Cam gear as cam, 14... Engagement part, 31... Loading head, 42... Supply part, 43... Turntable, 44 ... Regeneration section, 46... Discharge section.

Claims (3)

[Claims] (1) The end of a loading head for transporting a disc is rotatably provided on the main body around a spindle, and the disc to be played is placed on the main body so as to be located on the rotation locus of the loading head. a playback section for playing back the disk, and an ejection section for ejecting the played disk; and by rotation of the loading head, the disk is transported from the supply section to the playback section and from the playback section to the ejection section. A disc player characterized by: (2) The loading head moves forward and backward in the direction of the spindle with respect to each of the supply section, playback section, and ejection section, and when advancing, holds the disk placed in the supply section, and Attach the disc to the turntable that is
Claim 1 characterized in that the disk is ejected to an ejecting section.
The disc player described in . (3) The loading head is attached to the spindle, a cam is provided on this spindle, and an engaging part that engages with this cam is provided on the main body, and as the cam rotates, the spindle rotates, and the spindle 3. The disc player according to claim 2, wherein the disc player moves forward and backward in the axial direction.